SQL_Q1

2026-09-28 13:26:17 +09:00
parent a2236aae21
commit 5bf83a28e4
1 changed files with 113 additions and 0 deletions
--- a/SQL/Question1/book_table_清水.sql
+++ b/SQL/Question1/book_table_清水.sql
@@ -0,0 +1,113 @@
+Enter password: *********
+Welcome to the MySQL monitor.  Commands end with ; or \g.
+Your MySQL connection id is 20
+Server version: 8.0.32 MySQL Community Server - GPL
+
+Copyright (c) 2000, 2023, Oracle and/or its affiliates.
+
+Oracle is a registered trademark of Oracle Corporation and/or its
+affiliates. Other names may be trademarks of their respective
+owners.
+
+Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
+
+mysql> CREATE TABLE book_table (
+    -> \c
+mysql> ALTER TABLE book_table
+    -> ADD book_id INT,
+    -> ADD bookname VARCHAR(50),
+    -> ADD author_name VARCHAR(50),
+    -> ADD price INT,
+    -> ADD sales,flag INT;
+ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ',flag INT' at line 6
+mysql>  ALTER TABLE book_table
+    ->     -> ADD book_id INT,
+    ->     -> ADD bookname VARCHAR(50),
+    ->     -> ADD author_name VARCHAR(50),
+    ->     -> ADD price INT,
+    ->     -> ADD price INT,\c
+mysql> ALTER TABLE book_table
+    -> ADD book_id INT,
+    -> ADD book_name VARCHAR(50),
+    -> ADD author_name VARCHAR(50),
+    -> ADD price INT,
+    -> ADD sales_flag INT;
+ERROR 1146 (42S02): Table 'book_table.book_table' doesn't exist
+mysql> SHOW TABLE;
+ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
+mysql> SHOW TABLES;
+Empty set (0.00 sec)
+
+mysql> CREATE TABLE book_table (
+    -> book_id INT,
+    -> book_name VARCHAR(50),
+    -> author_name VARCHAR(50),
+    -> price INT,
+    -> sales_flag INT
+    -> );
+Query OK, 0 rows affected (0.02 sec)
+
+mysql> INSERT INTO book_table
+    -> VALUES(10001, 'TwoPeace', '三田英一郎', 420, 1),
+    -> (10002, '名探偵金田二', '青山ふみや', 460, 1),
+    -> (20001, '坊ちゃま', '冬目漱岩', 460, 1),
+    -> (30001, '西方見聞録', '不明', 1000, 1),
+    -> (40010, '吾輩は犬である', '冬目漱岩', 420, 1);
+Query OK, 5 rows affected (0.02 sec)
+Records: 5  Duplicates: 0  Warnings: 0
+
+mysql> SELECT book_name, author_name FROM book_table;
+----------------+-------------+
+| book_name      | author_name |
+----------------+-------------+
+| TwoPeace       | 三田英一郎  |
+| 名探偵金田二   | 青山ふみや  |
+| 坊ちゃま       | 冬目漱岩    |
+| 西方見聞録     | 不明        |
+| 吾輩は犬である | 冬目漱岩    |
+----------------+-------------+
+5 rows in set (0.00 sec)
+
+mysql> UPDATE book_table SET author_name = 'マール＝コーニポロ', salse_flag = 0 WHERE book_id = 30001;
+ERROR 1054 (42S22): Unknown column 'salse_flag' in 'field list'
+mysql> UPDATE book_table SET author_name = 'マール＝コーニポロ', sales_flag = 0 WHERE book_id = 30001;
+Query OK, 1 row affected (0.01 sec)
+Rows matched: 1  Changed: 1  Warnings: 0
+
+mysql> SELECT * FROM book_table WHERE sales_flag = 1;
+---------+----------------+-------------+-------+------------+
+| book_id | book_name      | author_name | price | sales_flag |
+---------+----------------+-------------+-------+------------+
+|   10001 | TwoPeace       | 三田英一郎  |   420 |          1 |
+|   10002 | 名探偵金田二   | 青山ふみや  |   460 |          1 |
+|   20001 | 坊ちゃま       | 冬目漱岩    |   460 |          1 |
+|   40010 | 吾輩は犬である | 冬目漱岩    |   420 |          1 |
+---------+----------------+-------------+-------+------------+
+4 rows in set (0.00 sec)
+
+mysql> SELECT * FROM book_table WHERE author
+    -> _name = '冬目漱岩' AND price = 420;
+ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '_name = '冬目漱岩' AND price = 420' at line 2
+mysql> SELECT * FROM book_table WHERE author_name = '冬目漱岩' AND price = 420;
+---------+----------------+-------------+-------+------------+
+| book_id | book_name      | author_name | price | sales_flag |
+---------+----------------+-------------+-------+------------+
+|   40010 | 吾輩は犬である | 冬目漱岩    |   420 |          1 |
+---------+----------------+-------------+-------+------------+
+1 row in set (0.01 sec)
+
+mysql> DELETE FROM book_table WHERE book_id = 20001;
+Query OK, 1 row affected (0.02 sec)
+
+mysql> SELECT * FROM book_table;
+---------+----------------+--------------------+-------+------------+
+| book_id | book_name      | author_name        | price | sales_flag |
+---------+----------------+--------------------+-------+------------+
+|   10001 | TwoPeace       | 三田英一郎         |   420 |          1 |
+|   10002 | 名探偵金田二   | 青山ふみや         |   460 |          1 |
+|   30001 | 西方見聞録     | マール＝コーニポロ |  1000 |          0 |
+|   40010 | 吾輩は犬である | 冬目漱岩           |   420 |          1 |
+---------+----------------+--------------------+-------+------------+
+4 rows in set (0.00 sec)
+
+mysql>